Time difference between Honolulu and Seoul
19 hours
Seoul is 19 hours ahead of Honolulu.
Does daylight saving change it?
No. The gap is the same all year. Neither city observes daylight saving.
Overlapping work hours
Between 14:00 and 18:00 in Honolulu, Seoul is also at work — 4 hours a day.
Honolulu time → Seoul time
| 00:00 | 19:00 |
|---|---|
| 01:00 | 20:00 |
| 02:00 | 21:00 |
| 03:00 | 22:00 |
| 04:00 | 23:00 |
| 05:00 | 00:00next day |
| 06:00 | 01:00next day |
| 07:00 | 02:00next day |
| 08:00 | 03:00next day |
| 09:00 | 04:00next day |
| 10:00 | 05:00next day |
| 11:00 | 06:00next day |
| 12:00 | 07:00next day |
| 13:00 | 08:00next day |
| 14:00 | 09:00next day |
| 15:00 | 10:00next day |
| 16:00 | 11:00next day |
| 17:00 | 12:00next day |
| 18:00 | 13:00next day |
| 19:00 | 14:00next day |
| 20:00 | 15:00next day |
| 21:00 | 16:00next day |
| 22:00 | 17:00next day |
| 23:00 | 18:00next day |
Standard time (January). During daylight saving each row shifts by an hour.
Frequently asked questions
Q. How many hours is Honolulu ahead of Seoul?
19 hours on standard time.
Q. What time is it in Seoul when it is noon in Honolulu?
Read the 12:00 row of the 24-hour table below. The table is on standard time, so each row shifts an hour during daylight saving.
Q. When should we schedule a meeting?
The two cities' work hours (09:00–18:00) overlap for 4 hours a day. Anything inside that window catches both sides at work.